in contrast to primary porosity, is the porosity that develops in the rock or sediment after its deposition, by means of such processes a dissolution or fracturing.
Porosity developed in a rock subsequent to its emplacement or deposition. Processes are mostly dissolution of grains, cements, and other constituents due to changes in pressure and (or) pore-fluid composition.
New pore space in rocks, created some time after a rock first forms.
Porosity developed after the original deposition of a formation, for instance by the action of water on soluble components of the rock or well stimulation techniques.
Porosity developed in a rock after its deposition as a result of fracturing or solution; usually not uniformly distributed.
Post depositional porosity. Such porosity results from fractures, vugs, solution channels, diagenesis, dolomitization, etc.